Derrick-frame for shaft-hoists.



PATENTED AUG. 2, 1904.

A. KLONNR.

DERRICK FRAME FOR SHAFT HOISTS.

APPLICATION FILED APR. 27 1904.

2 SHEETS-SHEET 1.

H0 MODEL.

No. 766,452. PATENTED AUG. 2, 1904.

- A. KLUNNB.

DERRICK FRAME FOR SHAFT HOISTS.

APPLIOATION FILED APR. 27, 1904.

H0 MODEL. 2 SHEETSSHEET 2.

0 c coo 0 o WITNESSES I INVQI'ILUR UNITED STATES Patented August 2, 1904.

PATENT OFFICE.

DERRICK-FRAME FOR SHAFT-HOISTS.

SPECIFICATION forming part of Letters Patent No. 766,452, dated August 2, 1904.

Application filed April 27, 1904. Serial No. 205,122. (No model.)

To all whom it may concern:

Be it known that I. Anensr KLoxNn, engineer, a subject of the German Emperor,-residing at 10 Heiligerweg, Dortmund, Germany, have invented new and useful Improvements in Derrick-Frames for Shaft-Hoists, of-which the following is a specification.

The present invention relates to a derricklike structure for shaft-hoists. The main elements of the structure consist of a pair of inclined struts and a vertical supporting-frame connected therewith, said vertical supportingframe constituting a rocking pillar having upper and lower pivotal connections. In some instances the pillar may constitute the guideframing for the lift-cage.

In the accompanying drawings, Figure 1 represents a front elevation of a structure enibodying my invention. Fig. 2 represents a plan view thereof with some of the parts removed. Fig. 3 represents a side elevation thereof. Figs. I, 5, and 6 represent diagrammatically the static conditions of the structure; and Figs. 7, 8, 9, 10, and 11 represent, on a larger scale, certain details of construction.

Referring to the drawings, and particularly to Figs. 1, 2, and 3, it willbe noted that in the embodiment of the invention therein shown the guide-framing or tower a itself constitutes the rocking pillar. At its upper portion it is provided with the pivotal connection 0 and at its lower portion with the pivotal connection (Z. At the upper end of the structure above the pivotal connection a is mounted a pulley or pulleys, over which the hauling-rope y depends into the center axial line of the pillar. hen loaded or weighted by forces having any given resultant, the pillar or tower can rock upon these pivotal connections, as indicated in Fig. L. The upper connection 0 joins the pillar or tower a to the inclined pair of struts 7). Each of these struts, like the pillar, is of a box-like open-work structure and is connected to the pillar at a point lying in the central longitudinal plane of the pillar by the stress and strain absorbing connection 0 referred to. By this arrangement and because of the connection (Z the pillar or tower a is loaded axially as near as possible and the in- JLlllOLlS bending or flexing strains and the v1- brations incident thereto are substantially avoided.

The structure as a whole, made up of the pillar or tower a and the pair of struts L, is adapted to take up statically all strains dueto the wind and to the hoisting-ropes and their appurtenances, inasmuch as the stresses and strains due to any load can be predetermined statically for the entire system, for if we resolve the forces acting upon the structure in an y given direction into componentforces parallel to and normal to the plane of the drawing Fig. 5 the forces working in said plane will be taken up by the system shown in Fig. 5, wherein are set up only abutment strains (at c, e, and (Z) and not bending or flexing strains, whereas in prior constructions, as far as I am aware, flexing strains have always occurred at the foot of the guide-tower in consequence of the rigid connections thereat. If, for instance, we consider the ordinary conditions indicated in Fig. 6, which occur in raising and lowering loads or in rupture of the hauling-rope and which consequently prescribe the cross-sectional dimensions of the bars of the struts and tower, we will obtain the direction of the abutment strains at (Z and c from the welllcnown condition that these strains and the load must intersect each other in such manner at the point that the abutmcnt-pressure of the part not directly subjected to the load (in the present instance the tower (a) shall pass through the apex-pivot c. .It will be seen, therefore, that the tower is only subjected to axial and central strains.

In Figs. 7 and SI have illustrated a suitable embodiment of the upper pivotal connection. (Indicated in the preceding figures by the letter (7.) In said Figs. 7 and 8 findicates a plate riveted to and forming part of the strut b, and 1 indicates similar plates riveted to and forming a part of the pillar or tower u. The plate f passes between the plates a filling-in or distance piece being provided and the plates f and g] being connected to rock upon each other by the pivotholt i. The struts and tower 0r pillar (.0, therefore, when moved rock upon each other about the bolt 1'.

In Fig. 9, which shows a suitable construction for the lower pivotal connection (Z of the preceding figures, k represents the shaftbearer, upon which the tower a rests by means of the bolt Z. The bolt Z on the one side engages the plate m of the tower (6(Wl1l0l1 in this instance may be reinforced by plates n) and on the other side engages the plates 0, riveted to the shaft-bearer k. When any movement occurs, the tower can rock upon the bolt Z.

Figs. 10 and 11 show an embodiment of the connection 6 of the preceding figures. In said Figs. 10 and 11, p is a base-plate having a semispherical projection q, with which engages the plate 9, fastened to the strut. The anchor 8 serves to prevent vibrations and possible slipping of the strut. hen any movement occurs, the strut can rock in any direction upon the projection q.

Inasmuch as the construction herein described can be calculated statically with accuracy and precision, it can be built much more economically than ordinary structures and of considerably less weight. Moreover, in view of its greater freedom from flexing strains and vibrations it is of correspondingly-greater support at its lower end, a pair of inclined struts pivotally connected to the pillar at its upper end, and means for hoisting 'loads, the pivots at the upper and lower ends of the pillar 1being located in the center line of the loac.

3. A derrick-like structure for shaft-hoists, comprising a vertical pillar having a pivotal support at its lower end, a pair of inclined struts pivotally connected to the pillar at its upper end, a hauling-rope, and a rope-carrying pulley mounted on the structure above the upper pivot, the pivots at both ends of the pillar being located in the axial center of the pillar and in the center line of the load.

4:. A derrick-like structure for shaft-hoists, consisting of an upright pillar pivoted on a support at its base, a pair of inclined struts pivotally connected to the upper end of the pillar, a pulley journaled in the structure above the pivotal connection between the pillar and the struts, and a hauling-rope passing over said pulley and depending centrally within the pillar, the pivots at the upper and lower ends of the pillar being located in axial line of the pillar and in the center line of the load, and the pillar being of skeleton openwork construction and of hollow rectangular form in cross-section so as to form a guide for the load.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AUGUST KLONNE.

WVitnesses:

PETER LIEBER, ERNEST ANDRn. 

